http://www.aboutmyvote.co.uk/faq/registering_to_vote.aspx Q. How can I contact my local electoral registration office? A. You can find the contact details for your local electoral registration office in the ‘Make it Local’ panel – just enter your postcode for the correct office. Somebody has the data then. And that website is linked from and claims to belong to the Electoral Commission. Perhaps they lied to you and your FoI request 🙂 (Hanlon's Razor probably applies)